arangodb | 🥑 ArangoDB is a native multi-model database with flexible data models for documents, graphs, and ke | Database library

 by   arangodb C++ Version: v3.10.6.2 License: Apache-2.0

kandi X-RAY | arangodb Summary

kandi X-RAY | arangodb Summary

arangodb is a C++ library typically used in Database applications. arangodb has no bugs, it has a Permissive License and it has medium support. However arangodb has 3 vulnerabilities. You can download it from GitHub.

ArangoDB is a scalable open-source multi-model database natively supporting graph, document and search. All supported data models & access patterns can be combined in queries allowing for maximal flexibility. ArangoDB runs on prem, in the cloud – anywhere.
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              arangodb has a medium active ecosystem.
              It has 12996 star(s) with 818 fork(s). There are 337 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 694 open issues and 3757 have been closed. On average issues are closed in 76 days. There are 117 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of arangodb is v3.10.6.2

            kandi-Quality Quality

              arangodb has no bugs reported.

            kandi-Security Security

              arangodb has 3 vulnerability issues reported (0 critical, 1 high, 1 medium, 1 low).

            kandi-License License

              arangodb is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              arangodb releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.

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            arangodb Key Features

            No Key Features are available at this moment for arangodb.

            arangodb Examples and Code Snippets

            The ArangoDB configuration .
            javadot img1Lines of Code : 7dot img1License : Permissive (MIT License)
            copy iconCopy
            @Override
                public ArangoDB.Builder arango() {
                    return new ArangoDB.Builder()
                      .host("127.0.0.1", 8529)
                      .user("baeldung")
                      .password("password");
                }  

            Community Discussions

            QUESTION

            ArangoDB Get Tree Root Nodes
            Asked 2021-May-20 at 22:00

            I’m storing basic hierarchical game trees in ArangoDB as graphs. Each game tree has a start node, and each node (including the start node) 2-5 edges (actions). I have 2 collections, nodes for vertices and actions for edges.

            I’m using the Node JS SDK and I’m trying to find the best way to query all start nodes? Should I add an isRoot property to nodes and query the nodes collection using that? Or should I query all nodes doing a filter using the actions collection to find nodes without inbound edges? Or a separate collection of start nodes?

            ...

            ANSWER

            Answered 2021-May-20 at 22:00

            Traversal or aggregation-based approaches to find root nodes will not be very efficient. The fastest option is probably to add an isRoot attribute that you can query for and potentially index.

            You could also create an extra vertex that has an outgoing edge to every root node so that you can do a 1-hop traversal from this node to all root nodes. But that could get in the way if you want to traverse in the opposite direction and that node would be a supernode that one typically tries to avoid.

            Source https://stackoverflow.com/questions/67627319

            QUESTION

            Creating an API to connect between ArangoDB and Prometheus to get the metrics of the data inside ArangoDB and expose it in Prometheus
            Asked 2021-May-16 at 16:19

            I am trying to creating an API to connect between ArangoDB and Prometheus. I have a statistics of the data in the ArangoDB for example, how many times the simulation has been launched that I want to see in Prometheus. Therefore I would like to confirm the following questions if it is correct as I understood:

            1. I checked the getting started guide of Prometheus (https://prometheus.io/docs/prometheus/latest/getting_started/) where we use node_exporter metrics in Prometheus. We need to launch this node_exporter and expose it on a specific IP address and port (listen address) then we need to configure the target in Prometheus config to target these ports that node_exporter is running on. Therefore, for my API, I need to create an API and app in Golang and this API/App need to be exposed in the specific HTTP port (for example 8001), then in Prometheus, I need to add the target for 8001 port in order for Prometheus to be able to scrape on my API. Is that correct?
            2. I need to find out the data format that Prometheus understand. I need to define the data format between my API (coming out from API) and Prometheus (coming into Prometheus). I found from this documentation (https://prometheus.io/docs/instrumenting/exposition_formats/) that it's the text format in this form:
            ...

            ANSWER

            Answered 2021-May-16 at 16:19

            It may be that you need only find a system that allows you to graph data. Prometheus has a sibling technology called Grafana.

            Prometheus is a tool that is configured to periodically scrape (read) measurements from endpoints (==targets) of systems. These measurements describe the state of the system at the time it is scraped. Prometheus records these measurements in time-series databases(s) and provides an expressive query language that enables insights to be found in the data. Prometheus includes basic charting of this time-series data too. Frequently Prometheus is combined with Grafana.

            Your question suggests that you're not looking to monitor the state of the database but to rather graph the (statistics) data contained in database tables. If so, Prometheus may not be what you need.

            To answer your questions, Prometheus' requires systems to publish sets of metrics in a simple text format called Exposition Format. Any system that generates data in this format and can serve the metrics on an HTTP endpoint can be scraped by Prometheus.

            Node Exporter is one example of such a system that publishes metrics that can be scraped by Prometheus. It publishes node (==host) metrics.

            ArangoDB is another system that can publish metrics (about its state; the state of the database system) in Prometheus' Exposition Format, see:

            https://www.arangodb.com/2020/03/monitoring-arangodb-prometheus-grafana/

            I suspect, what you need is a solution to graph a set of data that you already have stored in ArangoDB tables. For this, you may be able to connect a system like Grafana to your database and then use SQL queries to surface the data in a form that can be graphed.

            Source https://stackoverflow.com/questions/67546684

            QUESTION

            ArangoDB - Swap _to and _from values for edge using AQL
            Asked 2021-May-12 at 07:32

            Is there a clean way to swap the _to and _from values for an edge using AQL? According to Arango's documentation on Edges:

            To change edge endpoints you would need to remove old document/edge and insert new one. Other fields can be updated as in default collection.

            So what I was able to come up with was a query that looks like this:

            ...

            ANSWER

            Answered 2021-May-12 at 07:32

            Yes, there is a simpler solution:

            Source https://stackoverflow.com/questions/67493039

            QUESTION

            Internal ArangoDB error on simple REPLACE_NTH query
            Asked 2021-May-03 at 09:47

            In a completely empty arangodb instance (3.7.9), I first create the empty collection: temp. Then, I run two queries:

            ...

            ANSWER

            Answered 2021-May-03 at 09:47

            QUESTION

            arangosh: delete console history
            Asked 2021-May-01 at 21:04

            In arangosh, I have accidentally executed require("org/arangodb/users").save("user", "password") without the console.history false command-line option, and now the password seems to be permanently part of the history.

            Is there any way to delete the command history of arangosh?

            ...

            ANSWER

            Answered 2021-May-01 at 21:04

            There should be a file called .arangosh.history in your user folder.

            The path depends on your operating system. It should be one of the following:

            • /home//.arangosh.history on Linux
            • /Users//.arangosh.history on macOS
            • C:\Users\\.arangosh.history on Windows

            Source https://stackoverflow.com/questions/67308244

            QUESTION

            ArangoDB bindVars with dot?
            Asked 2021-May-01 at 20:51

            I would like to sort ArangoDB query results by various properties of a nested object however the bound vars seem not to work with dots in the names so

            ...

            ANSWER

            Answered 2021-May-01 at 20:51

            The document reference (here: a) needs to remain in the query. It must not be part of the bind variable.

            Source https://stackoverflow.com/questions/67333068

            QUESTION

            How to delete a vertex from arango DB in GO and have the edges automatically deleted?
            Asked 2021-Apr-26 at 13:34

            I'm using the arangodb go client and trying to delete a vertex and have the dangling edges automatically removed.

            The arangodb documentation says about named graphs :

            The underlying collections of the named graphs are still accessible using the standard methods for collections. However the graph module adds an additional layer on top of these collections giving you the following guarantees: (...) If you delete a vertex all edges referring to this vertex will be deleted too

            How do I harness the guarantees of the graph module using GO?

            I created a named graph with the collections and edge collections that I want to delete from, and still if I just remove from the collection I get dangling edges pointing to the newly removed vertex.

            Is there a way to use AQL to do this? The documentation suggests otherwise:

            Deleting vertices with associated edges is currently not handled via AQL while the graph management interface and the REST API for the graph module offer a vertex deletion functionality.

            Instead it offers a more complex query to do the same. But since this functionality exists on the graph web interface, and supposedly in the REST API, shouldn't it be present on the arangodb go driver? Am I missing something?

            It seems the advantages/guarantees of using named graphs aren't really there.

            ...

            ANSWER

            Answered 2021-Apr-26 at 13:34

            As @TomRegner suggested accessing a collection through graph.VertexCollection works.

            Source https://stackoverflow.com/questions/67194069

            QUESTION

            Efficient ArangoDB AQL query that can find all Edges in Collection that go To and From the same Documents
            Asked 2021-Apr-23 at 12:52

            I have an ArangoDB with two collections, one for Documents, and one for Edges, I'd like an efficient query capable of only returning the Edges that share the same _to and _from values.

            For example, assume my Documents Collection contains A, B, C, and D. Let's also assume my Edges Collection contains X, Y, and Z.

            Edge X is _from A and _to B.

            Edge Y is _from A and _to B as well.

            Edge Z is _from C and _to D.

            However, I do not know that X and Y are basically the same Edge, and I don't know that the Documents that share similar Edges are A & B. My query is to seek out these duplicate Edges.

            What I have so far looks like this:

            ...

            ANSWER

            Answered 2021-Apr-23 at 12:52

            After some more digging, I have found a significantly faster methodology using the COLLECT statement.

            Also, full disclosure, this was me building off of this other answer.

            Source https://stackoverflow.com/questions/67218312

            QUESTION

            arangodb lock file issue
            Asked 2021-Apr-05 at 10:58

            So I downloaded ArangoDB via homebrew yesterday. The documentation said to use the following to get the server started:

            ...

            ANSWER

            Answered 2021-Apr-05 at 10:58

            You can use "brew services start/stop/restart arangod". It is no longer necessary to start arangod explicitly. If it has been started explicitly just do a "killall arangod" to stop it gracefully and start it using "brew services start".

            Source https://stackoverflow.com/questions/66933828

            QUESTION

            Strange behaviour with vertex centric indexes
            Asked 2021-Mar-24 at 09:14

            I have some trouble understanding how to properly use vertex centric indexes in ArangoDB.

            In my cooking app, I have the following graph schema : (recipe)-[hasConstituent]->(ingredient)

            Let say I want all the recipes that need less than 0g of carrots. Result will be empty of course.

            ...

            ANSWER

            Answered 2021-Mar-24 at 09:14

            For a traversal FOR vertex, edge, path IN ..., filtering on either vertex or edge only applies to the results, but not what's actually visited. As to why that makes sense, keep in mind that generally, not all vertices or edges visited during the traversal are actually part of the result: For example, if min in the IN min..max argument is larger than zero - it's one by default - vertices (and their incoming edges) with distance lower than that are not part of the result, but have to be visited.

            That's why, if you want to restrict the edges visited during a traversal, you must add the filter on the path variable instead. For your example:

            Source https://stackoverflow.com/questions/66748318

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

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            You can download it from GitHub.

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